On 6 Jul 2002, Eric W. Biederman wrote: > It depends on the architecture. In particular x86 doesn't do that, > it fails silently. I believe alpha will give you a processor exception. ^^^^^^^^^^^^^^^^^
well, that is braindead. Foolish me, I assumed that a modern chipset would consider "issuing addresses to vapor" is a problem. On the other hand, many of the designers of this hardware come from the background of the microprocessor world with busses that didn't really support DTACK-style hardware, so I guess I can understand it. OK, never mind my earlier comments. But at the very least let's make sure that physical addresses are allocated on page granularity -- that definitely has been an issue for me with standard BIOSes. I can explain more why if anyone wants to know. ron p.s. Anybody remember "DTACK grounded :-)"
